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drek231 [11]
3 years ago
12

Please help! Numbers 16 & 17.. It will be much appreciated! :D

Mathematics
1 answer:
Soloha48 [4]3 years ago
7 0
I hope this helps you

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marusya05 [52]
So:
(x-4)(x+2) / (x-4)(x+4)
We cancel out the x - 4:
(x+2)/(x+4)
Restrictions: x ≠ 4, x ≠ -4
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Suppose Ted, a sociologist, is interested in comparing the amount of time that husbands and wives in the United States each spen
lidiya [134]

Answer:

1. A matched-pairs t-test is valid, despite the sample being a small representation of the population, because the sample is a simple random sample and has a distribution with a single peak.

Step-by-step explanation:

The matched-pairs test is valid, for the reasons given in choice 1. Here's why:

  • We do have matched pairs, not a 2-sample t-test, because each two are paired by the house they live in. Husband and wife live together: it's safe to pair them. (This rules out option 5.)
  • Check conditions: The sample is large enough (fulfilling the <u>sample size condition)</u>. The sample data is fairly normal, although we don't know the population data, and the sample size is over 40, so we consider it a fairly large sample (fulfilling the <u>nearly normal condition)</u>. We don't know about outliers, but we'll have to assume Ted doesn't have any, because they aren't mentioned.
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3 years ago
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What is the inverse of the function of (x)=2^(x)+6
Elden [556K]

Answer:

Option D.

Step-by-step explanation:

To find the inversion of a function follow the following procedure

1) Replace x with y in the function and clear y

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x-6 = 2^y

y = log_2(x-6)

2) Check. The range of f(x) is the domain of f^{-1}(x).

So if f(a) = b, this means that f^{-1}(b) = a.

f(2) = 2^2+ 6 = 10

f^{-1}(x) = log_2(10-6) = 2

Is fulfilled. Therefore y=log_2(x-6) is the inverse of f(x) = 2^{(x)} +6

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Answer:

John has 60minutes show 4:54 and Kim has wach her 45 minutes show what time does the show ends

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